20408637720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{883}}^1\times {\mathrm{1907}}^1$

素因数の和:2905

約数の個数: 128

約数和(自身を含む): 61934595840

約数和(自身を除く): 41525958120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 101, 120, 202, 303, 404, 505, 606, 808, 883, 1010, 1212, 1515, 1766, 1907, 2020, 2424, 2649, 3030, 3532, 3814, 4040, 4415, 5298, 5721, 6060, 7064, 7628, 8830, 9535, 10596, 11442, 12120, 13245, 15256, 17660, 19070, 21192, 22884, 26490, 28605, 35320, 38140, 45768, 52980, 57210, 76280, 89183, 105960, 114420, 178366, 192607, 228840, 267549, 356732, 385214, 445915, 535098, 577821, 713464, 770428, 891830, 963035, 1070196, 1155642, 1337745, 1540856, 1683881, 1783660, 1926070, 2140392, 2311284, 2675490, 2889105, 3367762, 3567320, 3852140, 4622568, 5051643, 5350980, 5778210, 6735524, 7704280, 8419405, 10103286, 10701960, 11556420, 13471048, 16838810, 20206572, 23112840, 25258215, 33677620, 40413144, 50516430, 67355240, 101032860, 170071981, 202065720, 340143962, 510215943, 680287924, 850359905, 1020431886, 1360575848, 1700719810, 2040863772, 2551079715, 3401439620, 4081727544, 5102159430, 6802879240, 10204318860, 20408637720]

約数ペア:

[(1, 20408637720), (2, 10204318860), (3, 6802879240), (4, 5102159430), (5, 4081727544), (6, 3401439620), (8, 2551079715), (10, 2040863772), (12, 1700719810), (15, 1360575848), (20, 1020431886), (24, 850359905), (30, 680287924), (40, 510215943), (60, 340143962), (101, 202065720), (120, 170071981), (202, 101032860), (303, 67355240), (404, 50516430), (505, 40413144), (606, 33677620), (808, 25258215), (883, 23112840), (1010, 20206572), (1212, 16838810), (1515, 13471048), (1766, 11556420), (1907, 10701960), (2020, 10103286), (2424, 8419405), (2649, 7704280), (3030, 6735524), (3532, 5778210), (3814, 5350980), (4040, 5051643), (4415, 4622568), (5298, 3852140), (5721, 3567320), (6060, 3367762), (7064, 2889105), (7628, 2675490), (8830, 2311284), (9535, 2140392), (10596, 1926070), (11442, 1783660), (12120, 1683881), (13245, 1540856), (15256, 1337745), (17660, 1155642), (19070, 1070196), (21192, 963035), (22884, 891830), (26490, 770428), (28605, 713464), (35320, 577821), (38140, 535098), (45768, 445915), (52980, 385214), (57210, 356732), (76280, 267549), (89183, 228840), (105960, 192607), (114420, 178366)]